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How to connect OPNForm MCP with ChatGPT

Connect ChatGPT to OPNForm MCP. List recent submissions for contact form, create a new 'feedback' form, and more using natural language, with authentication handled for you.

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OPNForm is an open-source form builder for creating and managing web forms. Use it to collect submissions, organize workspaces, and connect integrations easily.

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How to connect OPNForm MCP with ChatGPT

ChatGPT can take action across your apps and files, stay with a project for hours, and turn a goal into finished materials like sheets, slides, and docs, not just answers.

In this guide, I will explain the easiest and most secure way to connect your OPNForm account to ChatGPT via Composio Connect, so it can create forms, update form fields, list submissions, manage workspaces, and configure integrations through natural language commands without ever putting your account credentials at risk.

Also integrate OPNForm with

Claude CoworkHermesAtomic Agent

Why use Composio over default connectors?

  • Apps with read and write access. Default connectors mostly can read your data. Composio's OPNForm integration lets ChatGPT take actions like creating drafts, sending updates, labeling records, and more.
  • 1,500+ SaaS toolkits out of the box. Composio gives you instant access to a vast catalog of pre-built connectors, from Gmail and Slack to Notion, Linear, and Salesforce.
  • One MCP server for every app. Connect any of your applications on demand through a single endpoint, rather than juggling a separate server for each app.
  • Smart, context-aware tool loading. Unlike traditional MCP servers that dump every available tool into the LLM context window, Composio searches for and loads only the tools relevant to the task at hand.
  • Cross-app automation. Chain actions across multiple apps in a single run - fetch a thread, summarize it in Notion, and post highlights to Slack without leaving the conversation.

Prerequisites

Note: Composio connects through OAuth. You will be asked to sign in and approve specific permissions. Review the permission screen carefully if you are using a work account.

Step-by-step: Connect OPNForm to ChatGPT

1. Install the Composio plugin

Click the button. ChatGPT opens the Composio plugin page. Click Install plugin.

Install in ChatGPT

Composio plugin page in ChatGPT with the Install plugin button

You can also find it inside ChatGPT: go to Settings, open Plugins, search the marketplace for Composio, and click Install plugin.

2. Authenticate

After you install, ChatGPT asks you to authenticate with Composio. Log in and click Allow access to authorize ChatGPT to use your Composio account.

Composio login and Allow access screen for ChatGPT

3. Start using Composio

That is it. Composio tools are now available in ChatGPT. Type @Composio followed by your request, for example @Composio find unread OPNForm messages and summarize them, and it will run the actions you authorize. On first use it asks you to authorize OPNForm.

Option 2: Add Composio as an MCP server

If you cannot use the plugin marketplace, add Composio as a custom MCP server instead.

1. Open the MCP settings

In ChatGPT, go to Settings and open the Plugins section. Inside the Plugins page, click the MCP tab.

ChatGPT settings showing the Plugins page with the MCP tab selected

2. Add the server

Click Add server. In the Name field enter Composio, for Type select Streamable HTTP, and in the URL field paste the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
ChatGPT Add server dialog with the name Composio, type Streamable HTTP, and the Composio MCP URL

Then click Save. The Composio server now appears in your MCP plugins list.

ChatGPT Plugins page showing the Composio MCP server added to the list

3. Authenticate

Click Authenticate on the Composio entry, log in via Composio, and click Allow access. Composio tools are then available in ChatGPT the same way as with the plugin.

What you can do after connecting OPNForm

  • List recent submissions for Contact form
  • Create a new 'Feedback' form
  • Export submissions from 'Signup' form

Security + privacy notes (important)

  • Use least-privilege access: Only grant permissions you actually need.
  • Review OAuth permissions before approving: Make sure requested scopes match what you expect Composio and ChatGPT to do.
  • Keep write actions human-reviewed: For actions like sending messages, creating labels, or editing drafts, keep manual confirmation enabled.
  • Be careful with sensitive data: Avoid using this setup with highly sensitive information unless allowed by your personal, company, or client policies.
TOOLS

Supported Tools

Every OPNForm action and event your agent gets out of the box.

Cancel Workspace Invite

Cancel and remove a pending workspace invitation before it is accepted.

Create Form

Create an OpnForm form in a workspace from a title, ordered field or layout blocks, and optional validated form settings.

Create Form Integration

Create a generic webhook or Make integration for an OpnForm form.

Create Submission

Submit answers to a public OpnForm form.

Create Workspace

Create an OpnForm workspace.

Delete Form

Permanently delete a form and all of its submissions by numeric ID.

Delete Form Integration

Permanently remove a webhook integration from a form and stop its future deliveries.

Delete Submission

Permanently delete one submission from a form using both numeric IDs.

Delete Submissions

Permanently delete 1-25 submissions from one form through sequential provider requests.

Delete Workspace

Permanently delete a workspace and its contained resources.

Get Current User

Return the name and email of the OpnForm user associated with the connected personal access token.

Get Form

Retrieve a form by its public slug, including its complete field and layout definitions.

Invite Workspace Member

Add an existing OpnForm user to a workspace or email an invitation to a new user.

Invite Workspace Members

Add or invite 1-10 users to one workspace through sequential provider requests.

List Form Integrations

List webhook and Make integrations configured for a form, including IDs, status, and endpoint configuration.

List Forms

Return one page of lightweight form summaries from a workspace.

List Integration Events

Inspect past delivery attempts for one form integration, including the attempt date, Success or Error status, and a downstream HTTP status when available.

List Submissions

Return one searchable page of completed, partial, or all submissions for a form.

List Workspace Invites

List pending and accepted invitations for a workspace where the connected user is an administrator.

List Workspace Members

List members of a workspace with their user IDs, names, emails, and workspace roles.

List Workspaces

List workspaces accessible to the connected user, including IDs, plan tier, role flags, usage counts, enabled features, and plan limits.

Remove Workspace Member

Remove a specified member from a workspace without deleting the member's OpnForm account.

Resend Workspace Invite

Send another invitation email for an existing pending workspace invite.

Update Form

Replace or change an existing form's field definitions and settings using its numeric form ID.

Update Form Integration

Change a generic webhook integration's delivery URL or active status.

Update Form Submission Retention

Change or disable a form's automatic submission-retention policy.

Update Workspace

Change a workspace's name and icon without affecting its membership or forms.

Update Workspace Member Role

Change an existing workspace member's role to admin, user, or readonly.

FRAMEWORKS

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Claude Cowork

Use OPNForm MCP with Claude Cowork

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Hermes

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Atomic Agent

Use OPNForm MCP with Atomic Agent

FAQ

Frequently asked questions

With a standalone OPNForm MCP server, the agents and LLMs can only access a fixed set of OPNForm tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from OPNForm and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. ChatGPT fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right OPNForm tools.

Yes, absolutely. You can configure which OPNForm scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your OPNForm data and credentials are handled as safely as possible.

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